muscle

wire

the brain

nerve

liver cells

stem cells

skin cells

muscle cells

1 foot per second

1 meter per second

150 meters per second

100 miles per hour

electrical impulses

telegraph

proteins

hormonal

bipolar neurons

pyramidal neurons

Purkinje neurons

multipolar neurons

they regenerate very quickly

they help carry oxygen to different parts of your body

they are very long compared to other cells in the body

they do not have a nucleus

a nerve

all of the above

spinal cord

brains

glial cells

prison cells

muscle cells

stem cells

1 year

10 years

100 years

1 month